/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and limitations under the License.
 *
 * =========================================================================================================
 *
 * This software consists of voluntary contributions made by many individuals on behalf of the
 * Apache Software Foundation. For more information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * +-------------------------------------------------------------------------------------------------------+
 * | License: http://www.apache.org/licenses/LICENSE-2.0.txt 										       |
 * | Author: Yong.Teng <webmaster@buession.com> 													       |
 * | Copyright @ 2013-2019 Buession.com Inc.														       |
 * +-------------------------------------------------------------------------------------------------------+
 */
package com.buession.aop.resolver;

import com.buession.aop.MethodInvocation;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.util.ClassUtils;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

/**
 * @author Yong.Teng
 */
public class SpringAnnotationResolver extends AbstractAnnotationResolver {

    @Override
    public Annotation getAnnotation(MethodInvocation mi, Class<? extends Annotation> clazz){
        Method method = mi.getMethod();

        Annotation annotation = AnnotatedElementUtils.findMergedAnnotation(method, clazz);
        if(annotation != null){
            return annotation;
        }

        Class<?> targetClass = mi.getThis().getClass();
        method = ClassUtils.getMostSpecificMethod(method, targetClass);
        annotation = AnnotatedElementUtils.findMergedAnnotation(method, clazz);
        if(annotation != null){
            return annotation;
        }

        return AnnotatedElementUtils.findMergedAnnotation(targetClass, clazz);
    }

    @Override
    public Annotation getAnnotation(Method method, Class<? extends Annotation> clazz){
        Annotation annotation = AnnotatedElementUtils.findMergedAnnotation(method, clazz);
        if(annotation != null){
            return annotation;
        }

        Class<?> targetClass = method.getDeclaringClass();
        method = ClassUtils.getMostSpecificMethod(method, targetClass);
        annotation = AnnotatedElementUtils.findMergedAnnotation(method, clazz);
        if(annotation != null){
            return annotation;
        }

        return AnnotatedElementUtils.findMergedAnnotation(targetClass, clazz);
    }

}
